During his time at Oxford University, he was chair of the Oxford University Democratic Socialist Club.
At the 1959 general election, he was elected Member of Parliament (MP) for Dewsbury in the West Riding of Yorkshire.
In 1981, Ginsburg was among the Labour MPs who defected to the new Social Democratic Party.
In 1983, he polled 25% of the vote in Dewsbury, coming third and possibly having the effect of splitting the Labour vote and helping the Conservative candidate John Whitfield win.
This article about a Labour Party member of Parliament representing an English constituency is a stub.